@misc{indiciaec4e7ef1e379b,
  title = {Nonlinear Refractive Properties},
  author = {Vikram, Chandra S. and Witherow, William K.},
  year = {2001},
  url = {https://ntrs.nasa.gov/citations/20020022676},
  note = {Source identifier: 20020022676}
}